package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart=new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        shoppingCart.setUserId(BaseContext.getCurrentId());
        //查询sql
        List<ShoppingCart> list=shoppingCartMapper.list(shoppingCart);
        if(list!=null&&list.size()>0){
            ShoppingCart shoppingCart1 = list.get(0);
            shoppingCart1.setNumber(shoppingCart1.getNumber()+1);
            shoppingCartMapper.update(shoppingCart1);
        }
        else {
            Long dishId = shoppingCartDTO.getDishId();

            if (dishId!=null){
                Dish dish = dishMapper.findById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());
                shoppingCart.setDishFlavor(shoppingCartDTO.getDishFlavor());
            }
            else {
                Long setmealId = shoppingCartDTO.getSetmealId();
                SetmealVO setmeal = setmealMapper.getById(setmealId);
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setAmount(setmeal.getPrice());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.add(shoppingCart);
        }
    }

    @Override
    public List<ShoppingCart> list() {
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = ShoppingCart.builder().userId(userId).build();
        return shoppingCartMapper.list(shoppingCart);
    }

    @Override
    public void clean() {
        Long userId = BaseContext.getCurrentId();
        shoppingCartMapper.delete(userId);
    }

    @Override
    public void sub(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart=new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> ShoppingCartMapper = shoppingCartMapper.list(shoppingCart);

        if (ShoppingCartMapper.get(0).getNumber()==1){
            shoppingCartMapper.deleteSub(shoppingCart);
        }
        else if (ShoppingCartMapper.get(0).getNumber()>1){
            ShoppingCartMapper.get(0).setNumber(ShoppingCartMapper.get(0).getNumber()-1);
            shoppingCartMapper.update(ShoppingCartMapper.get(0));
        }
    }
}
